When mining a very small thickness of a fine vein, the mined area after the vein is taken is small because the thickness of the vein is small, and workers cannot work in it. If the surrounding rock is taken down, the depletion is too large, and the transportation and processing costs are increased, which is economically unreasonable. The essence is that in the working face, the ore and surrounding rock are separately mined, the ore is transported out, and the waste rock remains in the mine as a filling. In this case, a mining method or a wall-filling mining method can be applied. )
Characteristics of the wall-filling mining method: This method is continuous advancement of the working surface in the stage. Most of the nugget patios are the Chuanzhi Road patio. Since the ore body is very thin, there is no column left, sometimes a small bottom column is left, but sometimes the bottom column is not left, but an artificial bottom column (wood beam or concrete) is erected. When mining, first mining stones, then mining rocks. Before falling into the mine, lay a cushion on the filling material (paste belt or grass bag, spread steel plate, etc. 15 to 20 parts thick concrete), and use the artificial or rock to break down the ore with a 1.0 m deep blasthole. The electric raft is used to mine, and then the surrounding rock is filled to fill the goaf, forming the minimum space that the personnel can work. In this way, a piece of the nugget is finished.
In the 21st century, lifting platforms for high-altitude operations can be widely used. Once the only aerial work equipment - scaffold began to be slowly replaced by high-altitude suspended platforms and mast climbing work platforms/mast climber. So, what advantages does the mast climber have over the suspended platforms/cradles or scaffold?
Scaffold refers to the various supports that are built on the construction site for workers to operate. It also solves the vertical and horizontal transportation during the construction. With the emergence of a large number of modern large-scale building systems, fastener-type steel scaffold has been unable to meet the needs of construction development. It is imperative to vigorously develop and promote the application of new high-altitude operations. Practice has proved that the using of scaffold generally exists many defects, especially in high-rise buildings: the use of more materials, long erection time, the height of the operating platform is not convenient for construction operations, construction materials are not easy to transport and so on.
Mast Climbing Work Platform,Single Mast Climbing Work Platform,Mast Climbing Hanging Platform,Suspended Working Mast Climbing Platform
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